Sucker-rod elevator



Jan. 31, `1928. 1,657,7'80

D. D. BRANT SUCKER ROD ELEVATOR Filed nec. 15. 192e iig/ i| :1-

` 15 bodyof the elevator structure and lits supare partlyT curved to accommodate therodsA Patented Jan. 31, 19128. 'y y p i UNITED STATES PATENT OFFICE.

, DON D. BRANT, OF LONG BEACH, CALFORNIA;

SUCKER-ROD ELEVATOR.

Application led December 13, 1926. Serial No. 154,501.

My invention is a sucker rod elevator for extending vertically therethrouglnand Vwith use in deep wells, suoli as oil wells, for raisthe open mouth passage 3 for insertionof the ing and lowering the Vsucker rod, the pump rods. The body has a pair of opposite reand polish rods, and the like. cesses et on the trent portion and a pair of 'd0 .inthe use of elevators 'for raising sucker latches 5 are pivotally mounted onvertical rods and the like, in the type having latches pivot pins (i, secured in the upper and lower to hold the rod in place, itV has been found part ot the body across the recesses. A that the rods frequently become bent due to spring 7 operates between the gripping end 8V the body of the elevator becoming tilted so of the latch and an abutment 9 of the body. 65

l that the rods bears against either the latches of the elevator. rlhe latches may be operor the back of the body portion, thus creatated by ahand grip end 10. ing a leverage on the rod which bends same. The central opening has a pair of partly An object of my invention is` to overcome conical bearing surfaces 11 positioned this` and other defects by constructing the directly opposite and the inner side walls 12y 70 port fromV a bale so that the rod is susto be ittd therein. Theback portion 13 is pended slightly oit center and the body of cut back beyond the bearing surfaces `11`so the elevator has a tendency, when weight is that a rod is supported on opposite sides. It brought .on it, to tilt baclrwardly thereby will be noted that the center' portion 14 of 75 20 displacing the rod t0 a greater extent,v away this lOiCl Wall Ol2 the Opening 1S Substantially from the latches than with the ordinary type vertical and that the upper Mld W1` Parts of elevator, y v 15 and 16 have an inclination baclrwarclly for A further object of my invention is tormapurpose hereunder setiorth. v ing the body of the elevator With. a cut out Gudgeons 17 are constructed on the oppo- 80 portion at the rear ofthe slot oropening for site sides oit' the body, being preferably an the rod so that when the device is tilted .the integral casting therewith, and the bale 18 rod will not come into contact with the bach having` eyes `19 is swivelly mounted thereon, portion ot the body of the elevator, the rod there beingprcferably washers 2O and cotter being suspended by opposite conical bearing 13111521 holding the bale in position. On $5 surfaces which engage a shoulder on the rod. the bale I prefer to havea bulge 22 to allow My invention in its various aspects is illusthe men working with the elevator to be able trated in the accompanying drawings, in to grip the bale, even when it is coated with which: oil and therefore slippery. y Y Figure 1 is a horizontal section on-the line Referring to Fig. 1, the axial line of the o 11 of Fig. 3 in the direction of thearrows, gUClgeOIlS and hencethe support y from the and may be considered as a plan of the body bale is designated bythe numeral 23 and the structure of the elevator, such body structure Center 1111 0l the SUPpOIt fOl the IOd is indbeing partly cut away on the line of the cated `by the line 24,- the rod being desiglatches to lshow the clearance of the rod in Dated by the numeral i' 25 and having a 95 4u reference to the center part of the body and Shoulder 26 with a tapered part 27 between latches, the main body of the rod andthe collar or Figure 2 is a vertical section on theline Shoulder.` The rod also preferably has a 2 2 oi Fig. 1 in the direction yof the arrows.V squared section 28 with a shoulder on Y thev Figure 3 is a front elevation @n a reduced upper' part which may be fitted in the open- 100 scale, as if talren in the direction of the arrow ing if desired. Therefore .the axial center 3 of Fig. 1, showing the bale attached to the of the gudgeons in relationto the rod may elevator. be designated by the numeral 29, and the verg Figure 4 is a sketch similar to Fig. 2 illustica-l axial line of the rod may be designated trating the position of the rod when the by the numeral 3011A I 105 '-g elevator is tilted down at the baclr. The manner of using and functioning ot Figure 5 is a view similar to Fig. 4t showmy elevator is substantially as follows: ing the position Of the rod relativa `to the lt will be understood that the rods may elevator when the latter is tilted down at the be inserted n 'the Ordinary manner by orcy front. y ing the elevator against the rod or vice versa 110 Thel elevator lis constructed with a U so that the latches are pressed bach, allowshaped body Ti having a central opening the insertion oit the. in. the opening n nl Q. The elevator is then raised until the rod is seated on the conical bearing surfaces ll, heilig supported on its opposite sides b v the curved portion QT or the Shoulder 26, in accordance with the size and the curvature of the rod. Then the elevator device is horizontal, as shown in Fig. 2, the center line 30 of the rod is positioned rearwardly ot the center ot rotation 29 ot the elevator on account oi the axial line 23 ot the gudgeons being set forwardly ot the supporting center line Therefore when weight is brought on the elevator, due to lifting or supporting rods, the elevator body tilts backwai'dly and downwardly, as illustrated in Fig. Lt. This causes the portion ot the rod below the shoulders Q6 to swing rearwardly towards the rear wall l-l, l5 and 16 of the opening 2 and it will be seen, on account ot the inclination of the ends l5 and 1G, that the rod does not touch this back wall and hence there is no' leverage against the rod to bend saine. Therefore, should by chance the rod engage the bach wall, on account of the long leverage between the shoulder and the engaging point., the rod would notbe apt to bend.

In Fig. 5 the body ofthe elevator tilted forward indicating a position in whiffh the center line 29 of thegudgeons is in alignment with the vertical center line St) of the rod. iVhen the device is tilted in this direction, such tilt is-against the natural pull oli' the rod and in approximately such position the ends 8 of the latches 5 would engage the rod or possibly the rod might swing slightly forward of the center'. In prior constructions the rods have been bent usnallyv by tiltirgg of the elevator relative to the rod so that the rod engages the latches, there then being a short leverage between the shoulders and the engaginglatches and giving the rod a bend. lt will thus be seen that my construction of an elevator having two opposite surfaces ot somewhat conical shape-to engage the rod with a large. space behind the rod and between the rod and the latches, together with the ofi'set centers ot gndgeons and the rods, prevents to a great extent their bending ofthe rods. It'is vto be understood that in Figs. 4 and 5 the ofiset ot such centers has been exaggerated for the sake ot illustration. It will be a)- parent that my elevator may be used in the ordinary manner ofthose now on `the inarket and covered by patents.

A characteristic feature of my invention is that the partial curve l2 in the side walls between which the sucker rod depends, being supported on the conical hearing surfaces l1, extends from top to bottom ol' the U-shaped elevator body. Moreover, the center line ol 'the curved inner walls 1'.) and the curved seats ll is set inwardly to one .side from the axial line of the gndgeons. 'l'hat is, these are in two parallel planes, when the upper and lower surface of the supporting body is horizontal.

Various changes may be made in the prinv,iples of niv invention without departing from the spirit thereot, as set 'forth in the description, orawings and claims.

l claim:

1. A sucker rod ele yator comprising in combination a bod j structure having a central opening with an entrance at the frontA and having a back wall, side walls leading trein the front opening to the back wall, said side walls having opposite vertical curved sections parallel to each other and extending' from top to bottom ot the body structure, means to suspend the body structure and l'neans to form a closure for the said central opening.

A sucker rod elevator comprising in combination a body structure having a central opening with an entrance at the front and *having back and .side walls having .opposite curved sections parallel to each other, gndgeons forming a pivotal support for the body structure, the vaxis ot' said gndgconf-z being in a plane :forward of the vertical plane of the axis oi the curved sectionso'i the side walls, and means torn'iing a closure i'or the entrance of the opening.

3. A sucker rod elevator comprising in combination a body structure having a central opening with an entrance at the front and having back4 and side walls, the side walls having curved sections parallel to each other and extending from top to bottorn of the'body structure, there being conical seats at the termination of each curved section at the top and bottom ol' the body structure,,gndgeons forming a pivotal snpport i'or the body structure. the axial line of the gudgeons beiner forward of the rertical plane of the curved portions ot' thtl side walls, the back wall being beveled at the top and bottoni rearwardly ot the body structure, and latches 'formingr a closure for the entrance oi"4 the central opening.

`Alntestiniony whereof I have signed my naine to this specification.

DON D. BRANT.

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